- Add per-level autoplay videos
- Add level editor field for autoplay video
- Add video preview to level editor
- Add fallback for missing video slides
- Don't autoplay concept videos in non-legacy levels
- Rename @videos to @related_videos
- Add tests for related videos, autoplay videos
- Test concept importing
Remove unnecessary update from tests
Change wording of video notes coming soon
Clarify slide image reference cleanup logic
- Test slide rendering
- Test slide image fixing logic
- Extract "coming soon" to separate layout
Use to_json instead of nested javascript construction
Simplify video choices helper, test
Move video property from Blockly -> Level
Populate related videos from level
- Test level related videos
missing -> new [ci skip]
Reset I18n after test
Remove extra space [ci skip]
Fix tests
Merge pull request #1173 from code-dot-org/per_level_videos

Add per-level autoplay videos and associated level editor field